---
id: CVE-2026-53420
title: >-
  Buffer overflow in a Zoom Phone feature of Zoom Workplace Clients may allow an
  unauthenticated user to conduct a escalation of privilege via network access.
summary: >-
  Buffer overflow in a Zoom Phone feature of Zoom Workplace Clients may allow an
  unauthenticated user to conduct a escalation of privilege via network access.
severity: high
cvss: 8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H'
cwe:
  - CWE-120
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T16:53:44.693'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53420'
references:
  - url: 'https://www.zoom.com/en/trust/security-bulletin/zsb-26020'
    label: security@zoom.us
tags:
  - nvd
ingestedAt: '2026-10-13T15:33:40.078Z'
---

## Overview

Buffer overflow in a Zoom Phone feature of Zoom Workplace Clients may allow an unauthenticated user to conduct a escalation of privilege via network access.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.